Three zones ideal heating

The previous sections primarily focused on simulating the building envelope to understand how the YAML file inputs for Trano can be structured. This section will shift the focus to simulating a building equipped with a heating system. Specifically, we will consider a three-zone building featuring an ideal heating system.

Below is a description of the YAML configuration file that details the building's heating system:

emissions:
- radiator:
    id: RADIATOR:001
    variant: ideal
    parameters:
      nominal_heating_power_positive_for_heating: 2500
    control:
      emission_control:
        id: EMISSION_CONTROL:001
        parameters:
          schedule: 3600*{10, 20}
          temperature_heating_setpoint: 295.15
          temperature_heating_setback: 291.15

In this configuration, the emissions field indicates that the space is associated with an emission system. The variant field specifies the type of radiator, which in this case is an ideal radiator. The control object of the radiator is defined within the control field, where parameters such as setpoints and schedule are outlined, along with the heating power of the ideal radiator.

Input configuration file

The described building configuration appears to be a multi-room structure featuring a combination of thermal constructions and glazing systems. Here are the key characteristics:

Material Use: The external walls and floors are constructed with three different materials that have low thermal conductivity and relatively high density, indicating good thermal mass properties.
Spatial Layout: The building contains various spaces (three distinct spaces noted) with different floor areas and heights, suggesting it may be designed for residential or small commercial use.
Windows and Glazing: The building includes double glazing with an air gap for insulation, which enhances thermal performance, especially in energy-efficient designs.
Heating System: An ideal radiator system provides heating with a scheduled control mechanism, suggesting consideration for occupant comfort and energy efficiency.
Room Size and Shape: The presence of both smaller (80 m²) and larger (120 m²) rooms with similar ceiling heights suggests a design that accommodates various functions or usage patterns.

Overall, the building configuration indicates an energy-efficient structure that could serve as a residence or small office, focusing on thermal comfort and efficiency.

material:
  - id: MATERIAL:001
    thermal_conductivity: 0.045
    density: 2100.0
    specific_heat_capacity: 900.0
  - id: MATERIAL:002
    thermal_conductivity: 0.04
    density: 1950.0
    specific_heat_capacity: 950.0
  - id: MATERIAL:003
    thermal_conductivity: 0.038
    density: 2050.0
    specific_heat_capacity: 920.0

constructions:
  - id: CONSTRUCTION:001
    layers:
      - material: MATERIAL:001
        thickness: 0.12
      - material: MATERIAL:002
        thickness: 0.08
      - material: MATERIAL:003
        thickness: 0.1

glass_material:
  - density: 2500.0
    id: GLASS:001
    longwave_emissivity: 0.82
    shortwave_emissivity: 0.65
    specific_heat_capacity: 860.0
    thermal_conductivity: 1.1

gas:
  - density: 1.18
    id: AIR:001
    longwave_emissivity: 0.0
    shortwave_emissivity: 0.0
    specific_heat_capacity: 1005.0
    thermal_conductivity: 0.026

glazings:
  - id: INS2AR2020:001
    layers:
      - glass: GLASS:001
        thickness: 0.005
      - gas: AIR:001
        thickness: 0.014
      - glass: GLASS:001
        thickness: 0.005

spaces:
  - parameters:
      floor_area: 80.0  # Smaller room
      average_room_height: 2.5
    id: SPACE:001
    external_boundaries:
      external_walls:
        - surface: 90.0
          azimuth: 180.0
          tilt: wall
          construction: CONSTRUCTION:001
        - surface: 70.0
          azimuth: 90.0
          tilt: wall
          construction: CONSTRUCTION:001
        - surface: 160.0
          azimuth: 270.0
          tilt: wall
          construction: CONSTRUCTION:001
      floor_on_grounds:
        - surface: 80.0
          construction: CONSTRUCTION:001
      windows:
        - surface: 1.5
          azimuth: 180.0
          tilt: wall
          construction: INS2AR2020:001
          width: 1.5
          height: 1.0

  - parameters:
      floor_area: 120.0  # Larger room with different shape
      average_room_height: 2.7
    id: SPACE:002
    external_boundaries:
      external_walls:
        - surface: 120.0
          azimuth: 180.0
          tilt: wall
          construction: CONSTRUCTION:001
        - surface: 100.0
          azimuth: 90.0
          tilt: wall
          construction: CONSTRUCTION:001
        - surface: 220.0
          azimuth: 0.0
          tilt: wall
          construction: CONSTRUCTION:001
      floor_on_grounds:
        - surface: 120.0
          construction: CONSTRUCTION:001
      windows:
        - surface: 2.0
          azimuth: 180.0
          tilt: wall
          construction: INS2AR2020:001
          width: 2.0
          height: 1.2
  - parameters:
      floor_area: 120.0  # Larger room with different shape
      average_room_height: 2.7
    id: SPACE:003
    external_boundaries:
      external_walls:
        - surface: 120.0
          azimuth: 180.0
          tilt: wall
          construction: CONSTRUCTION:001
        - surface: 100.0
          azimuth: 90.0
          tilt: wall
          construction: CONSTRUCTION:001
        - surface: 220.0
          azimuth: 0.0
          tilt: wall
          construction: CONSTRUCTION:001
      floor_on_grounds:
        - surface: 120.0
          construction: CONSTRUCTION:001
      windows:
        - surface: 2.0
          azimuth: 180.0
          tilt: wall
          construction: INS2AR2020:001
          width: 2.0
          height: 1.2

    emissions:
      - radiator:
          id: RADIATOR:001
          variant: ideal
          parameters:
              nominal_heating_power_positive_for_heating: 2500
          control:
            emission_control:
              id: EMISSION_CONTROL:001
              parameters:
                schedule: 3600*{10, 20}
                temperature_heating_setpoint: 295.15
                temperature_heating_setback: 291.15

internal_walls:
  - space_1: SPACE:002
    space_2: SPACE:001
    construction: CONSTRUCTION:001
    surface: 18.0

Code

This code snippet demonstrates how to simulate a multizone house using Trano. It leverages the same code from the previous tutorial, making it straightforward to implement.

Test tutorials

    from trano.main import simulate_model
    from trano.simulate.simulate import SimulationLibraryOptions

    simulate_model(
        "./three_zones_ideal_heating.yaml",
        SimulationLibraryOptions(
            start_time=0,
            end_time=2 * 3600 * 24 * 7,
            tolerance=1e-4,
            library_name="Buildings",
        ),
    )

General Explanation

The code snippet imports functions required to simulate a model defined in a YAML file using specific simulation options. It sets up a simulation for a heating model across three zones.

General Description and Parameters

Function: simulate_model
Parameters:
File Path: "./three_zones_ideal_heating.yaml"
- Location of the model configuration file in YAML format.
SimulationLibraryOptions:
- start_time: 0
- The initial time for the simulation (in seconds).
- end_time: 2 * 3600 * 24 * 7
- The final time for the simulation, calculated as 2 weeks (in seconds).
- tolerance: 1e-4
- The acceptable error tolerance for the simulation.
- library_name: "Buildings"
- The name of the library used for the simulation, indicating it focuses on building systems and dynamics.

Outputs

The following report has been generated by Trano after simulating a three-zone building equipped with an ideal heating system.

Spaces

External Boundaries Table

hRoo	AFlo	linearizeRadiation	m_flow_nominal	mSenFac	T_start	volume
2.5	80.0	true	0.01	1.0	294.15	200.0

gain	k	occupancy	name
[40; 75; 40]	1/7/3	3600*{9, 17}	occupancy_1

External Boundaries Table

Name	Azimuth	Construction Name	Surface	Tilt
externalwall_0	180.0	construction_001	90.0	wall
externalwall_1	90.0	construction_001	70.0	wall
externalwall_2	270.0	construction_001	160.0	wall
window_0	180.0	ins2ar2020_001	1.5	wall
flooronground_0	90.0	construction_001	80.0	floor
internal_space_002_space_001_construction	10.0	construction_001	18.0	wall

hRoo	AFlo	linearizeRadiation	m_flow_nominal	mSenFac	T_start	volume
2.7	120.0	true	0.01	1.0	294.15	324.0

gain	k	occupancy	name
[40; 75; 40]	1/7/3	3600*{9, 17}	occupancy_2

External Boundaries Table

Name	Azimuth	Construction Name	Surface	Tilt
externalwall_3	180.0	construction_001	120.0	wall
externalwall_4	90.0	construction_001	100.0	wall
externalwall_5	0.0	construction_001	220.0	wall
window_1	180.0	ins2ar2020_001	2.0	wall
flooronground_1	90.0	construction_001	120.0	floor
internal_space_002_space_001_construction	10.0	construction_001	18.0	wall

hRoo	AFlo	linearizeRadiation	m_flow_nominal	mSenFac	T_start	volume
2.7	120.0	true	0.01	1.0	294.15	324.0

gain	k	occupancy	name
[40; 75; 40]	1/7/3	3600*{9, 17}	occupancy_3

Name	Azimuth	Construction Name	Surface	Tilt
externalwall_6	180.0	construction_001	120.0	wall
externalwall_7	90.0	construction_001	100.0	wall
externalwall_8	0.0	construction_001	220.0	wall
window_2	180.0	ins2ar2020_001	2.0	wall
flooronground_2	90.0	construction_001	120.0	floor

TAir_nominal	dp_nominal	n	deltaM	fraRad	Q_flow_nominal	nEle	TRad_nominal	linearized	from_dp	T_a_nominal	T_b_nominal	mDry	VWat	name
293.15	0.0	1.24	0.01	0.3	2500.0	1	293.15	false	false	363.15	353.15	65.75	0.145	radiator_001

Construction

Layer Information Table

Layers for ins2ar2020_001
Name	c	epsLw	epsSw	k	rho	Thickness
glass_001	860.0	0.82	0.65	1.1	2500.0	0.005
air_001	1005.0	0.0	0.0	0.026	1.18	0.014
glass_001	860.0	0.82	0.65	1.1	2500.0	0.005

Layer Information Table

Layers for construction_001
Name	c	epsLw	epsSw	k	rho	Thickness
material_001	900.0	0.85	0.85	0.045	2100.0	0.12
material_002	950.0	0.85	0.85	0.04	1950.0	0.08
material_003	920.0	0.85	0.85	0.038	2050.0	0.1